AN-PR1000H
- AN-PR1000HR - Sharp Home Cinema System - Error codes - test mode - SMPS schematic - Disassemble procedure - LED blinkig codes - Failure detection - Test mode - ASPM test mode
SYMPTOM - No Function and error code “ERR80”.
CAUSE - EEPROM errors.
ACTION - When replaced please follow the instructions below.
EEPROM Test - IXA116AW RH-IXA116AW00
• Holding down both the Power and Function Buttons, plug in or turn on the mains supply.
• Unit will enter the Test mode and display the Microprocessor Version number.
• Using the remote press the Sound button.
• The display will show “EEP.Test”.
• Press and hold the Volume down button for longer than 2 Seconds.
• Display will show “EEP.lL”
• Press the Power button twice.
• The display will show “Goodbye”
• The process is now completed.
Entering the test mode
In the AC OFF state, hold down the “FUNCTION” key and press the POWER key. Then switch on AC to enter the test mode route state.
* Be sure to follow the above procedure to enter the test mode.
Exiting the test mode
In the test mode route state, press the POWER key to turn off the system and exit the test mode.
When replacing EEPROM IC, necessary data are not recorded inside; “Protect area
read error” (“ERR 80”) occurs.
To avoid this state, write the data into the corresponding device.
1. Enter the test mode and check set data values of each address according to the EEPROM set data table on the right. If necessary, change the set data values.
NOTE: (Data are written into EEPROM in the procedure 4 below.) (Do not disconnect power supply to the product)
To avoid this state, write the data into the corresponding device.
1. Enter the test mode and check set data values of each address according to the EEPROM set data table on the right. If necessary, change the set data values.
NOTE: (Data are written into EEPROM in the procedure 4 below.) (Do not disconnect power supply to the product)
Exiting the EEPROM mode from the address value display state. (Press the POWER key once in the address value display state.) (The product enters the test mode route state.)
Exiting
the test mode
(Press the POWER key once in the test mode route state.)
(Then the data are written into EEPROM. After the write operation, the product enters the standby state.)
(Press the POWER key once in the test mode route state.)
(Then the data are written into EEPROM. After the write operation, the product enters the standby state.)
After
checking that the product enters the standby state, stop power supply to the
product.
(This operation initializes the error state.)
* Operation ends.
(This operation initializes the error state.)
* Operation ends.
To
Check And Cancel Protect Circuit Detection
1. After the power is turned on, the microprocessor (ICM7) built in this model continuously monitors the following defective operation. If any abnormality occurs, all power is shut down except in the microprocessor drive circuit.
1. After the power is turned on, the microprocessor (ICM7) built in this model continuously monitors the following defective operation. If any abnormality occurs, all power is shut down except in the microprocessor drive circuit.
1) An abnormal drop of each regulator output voltage. (The protection circuit
operates when the regulator output voltage is below 1.5 V.) The power is shut
down immediately with no display.
2) Defect of the cooling fan motor and the cooling fan drive circuit. (Stoppage, etc.) The power is turned off after “FAN LOCK” is displayed.
2) Defect of the cooling fan motor and the cooling fan drive circuit. (Stoppage, etc.) The power is turned off after “FAN LOCK” is displayed.
3)
Over voltage or reduced voltage of power supply. The power is shut down immediately with no
display when voltage is abnormal.
2. Failure detection conditions of the built-in microprocessor, check of the detection line and solution.
Conditions
1) To detect failure according to voltage of the microprocessor ICM7 pin 91.
2) Abnormal if pulse signals are not input into the pin 5 (FAN LOCK) for more than 5 seconds.
3) Abnormal if the voltage of the pin 97 (+B CHECK) is lower than 1.2 V or higher than 3.0 V.
2. Failure detection conditions of the built-in microprocessor, check of the detection line and solution.
Conditions
1) To detect failure according to voltage of the microprocessor ICM7 pin 91.
2) Abnormal if pulse signals are not input into the pin 5 (FAN LOCK) for more than 5 seconds.
3) Abnormal if the voltage of the pin 97 (+B CHECK) is lower than 1.2 V or higher than 3.0 V.
Check
of the detection line and solution
NOTE: If the microprocessor detects failures of 1), 2) and 3) above, it does not operate protectively when its PROTECT, and +B CHECK detection lines are disconnected. When these failures are caused by output short-circuit of each regulator, components and PWB of the regulator may burn
out. If the cause is not clear, do not disconnect the detection line.
(Even if any failure is detected, conduction is available for 0.5 second. You can check conduction by an oscilloscope, etc. However, a tester is not available due to rapid rise and decay of voltage.)
NOTE: If the microprocessor detects failures of 1), 2) and 3) above, it does not operate protectively when its PROTECT, and +B CHECK detection lines are disconnected. When these failures are caused by output short-circuit of each regulator, components and PWB of the regulator may burn
out. If the cause is not clear, do not disconnect the detection line.
(Even if any failure is detected, conduction is available for 0.5 second. You can check conduction by an oscilloscope, etc. However, a tester is not available due to rapid rise and decay of voltage.)
When
output voltage of each regulator drops abnormally.
Connect the oscilloscope to the regulated output of the regulator and power on the system. If the voltage is significantly lower than that shown in the circuit diagram (approx. 1.5 V or less), the regulator itself and the destination circuit are suspected.
Connect the oscilloscope to the regulated output of the regulator and power on the system. If the voltage is significantly lower than that shown in the circuit diagram (approx. 1.5 V or less), the regulator itself and the destination circuit are suspected.
Failure
Detection Identification Using STANDBY LED
Identification
format using STANDBY LED
If any failure is detected, STANDBY LED blinks red after power off. You can identify the failure state by checking which LED output number from the frame head is blinking 4 times each for 2 seconds.
If any failure is detected, STANDBY LED blinks red after power off. You can identify the failure state by checking which LED output number from the frame head is blinking 4 times each for 2 seconds.
Normally,
LED light up for 2 seconds and light off for 1 second on a 3-second cycle (6
times from No. 1 to No. 6). For No.7, LED light off for 3 seconds, showing the
frame end (for recognition of the frame head).
In No. 2, LED blinks alternately at shorter intervals than usual for failure identification. For failure status, refer to the appendix, “STAND-BY LED Error Message”
In No. 2, LED blinks alternately at shorter intervals than usual for failure identification. For failure status, refer to the appendix, “STAND-BY LED Error Message”
Failure detection
1. SYS-PROTECT detection: To detect failure of the power supply circuit (except the 1.8 V power supply circuit).
2. B_CHECK detection: To check timing at power ON/OFF and detect over voltage and reduced voltage of the primary AC power after the power is turned on.
SYS-PROTECT detection => immediate power shut-down; Identification No.1 blinking
B_CHECK detection => immediate power shut-down; Identification No.2 blinking in case of over voltage No blinking in case of reduced voltage.
AVCK detection => immediate power shut-down; Identification No.3 blinking
AMP_SW_PROT detection => immediate power shut-down; Identification No.6 blinking.
Error messages
Disassemble procedure
SMPS circuit diagram
ASPM Test Mode (For EU Destination)
At Tuner RDS ASPM operation need to be confirm for EU(H) model only.
Power-ON in TUNER function, and scanning frequency from 105.00MHz - 108.00MHz.
And RDS station Preset Memory maximum 3 stations.
TEST
Mode Operation
Power ON in TUNER Function 106.50MHz FM Stereo Band. At same time Only Preset No. ch1 - ch3 leave blank and all ch4 - ch40 memory at 87.50MHz FM Stereo Band.
With the press of ASPM key, ASPM operation will start at 105.00MHz frequency. If RDS station received Preset will memory from ch1. (There is no need to memory PS name in ASPM Test Mode. If preset change during Test Mode Frequency will be display first)
Scan will stop after reach frequency 108.00MHz, and return to frequency 106.50MHz FM Stereo.
To confirm Memory content display will show Preset Number and frequency for ch1until ch3. After display is confirmed frequency will return to 106.50MHz FM STEREO. (Display method same with Tuner display during Normal POWER ON.)
Power ON in TUNER Function 106.50MHz FM Stereo Band. At same time Only Preset No. ch1 - ch3 leave blank and all ch4 - ch40 memory at 87.50MHz FM Stereo Band.
With the press of ASPM key, ASPM operation will start at 105.00MHz frequency. If RDS station received Preset will memory from ch1. (There is no need to memory PS name in ASPM Test Mode. If preset change during Test Mode Frequency will be display first)
Scan will stop after reach frequency 108.00MHz, and return to frequency 106.50MHz FM Stereo.
To confirm Memory content display will show Preset Number and frequency for ch1until ch3. After display is confirmed frequency will return to 106.50MHz FM STEREO. (Display method same with Tuner display during Normal POWER ON.)
If
ASPM key is press again, ASPM operation will start from 2 until 5.
While scanning if 3 station memorized, Scanning will stop and operation 4 and 5 will take place.
Afterward, even if ASPM key input detects ASPM operation will not be execute. "__END__" displayed and operation canceled.
While scanning if 3 station memorized, Scanning will stop and operation 4 and 5 will take place.
Afterward, even if ASPM key input detects ASPM operation will not be execute. "__END__" displayed and operation canceled.
Other
then above, operations for ASPM are same with User operation. So, when 1st time
scan with same PI code Station with most strong signal will be memory and will
not be memory many time. For 2nd and more station with same frequency will not
be memory.
But, if different station with same PI code (same PI with different frequency station), station one with most strong signal will be memory.
So, station that already memorized before scan will be ignore. Therefore, even station with same same PI code after 3 times ASPM scan; it is possible that, 3 station will be memorized in Signal Strong order.
After Test Mode end only Tuner preset memory will be reset and set to default. Others Memory, no need to be initializing.
But, if different station with same PI code (same PI with different frequency station), station one with most strong signal will be memory.
So, station that already memorized before scan will be ignore. Therefore, even station with same same PI code after 3 times ASPM scan; it is possible that, 3 station will be memorized in Signal Strong order.
After Test Mode end only Tuner preset memory will be reset and set to default. Others Memory, no need to be initializing.
